<template>
	<!--
    	描述：组件-选择练习
    -->
	<el-dialog title="选择练习" v-model="dialogVisible" @close="dialogFormVisible" :close-on-click-modal="false"
		:close-on-press-escape="false" width="900px">
		<div class="common-seach-wrap">
			<el-form :inline="true" size="small" :model="formInline" class="demo-form-inline">
				<el-form-item label="练习分类">
					<el-select v-model="formInline.category_id" placeholder="请选择练习分类">
						<el-option :value="0" :label="'全部'"></el-option>
						<template v-for="cat in cateList" :key="cat.category_id">
							<el-option :value="cat.category_id" :label="cat.name"></el-option>
							<template v-if="cat.child !== undefined">
								<template v-for="two in cat.child" :key="two.category_id">
									<el-option :value="two.category_id" :label="two.name"
										style="padding-left: 30px;"></el-option>
									<template v-if="two.child !== undefined">
										<template v-for="three in two.child" :key="three.category_id">
											<el-option :value="three.category_id" :label="three.name"
												style="padding-left: 60px;"></el-option>
										</template>
									</template>
								</template>
							</template>

						</template>
					</el-select>
				</el-form-item>
				<el-form-item label="练习名称">
					<el-input placeholder="请输入练习名称" v-model="formInline.search">
					</el-input>
				</el-form-item>
				<el-form-item label="">
					<el-button icon="Search" @click="getData">查询</el-button>
				</el-form-item>
			</el-form>
		</div>

		<!--内容-->
		<div class="lecturer-content">
			<div class="table-wrap">
				<el-table size="small" :data="lecturerList" border style="width: 100%" highlight-current-row
					v-loading="loading" @selection-change="tableCurrentChange">
					<el-table-column width="70" label="练习图片">
						<template #default="scope">
							<img :src="scope.row.image.file_path" width="30" height="30" />
						</template>
					</el-table-column>
					<el-table-column prop="title" label="练习名称"></el-table-column>
					<el-table-column prop="category.name" width="100" label="练习分类"></el-table-column>
					<el-table-column prop="create_time" width="140" label="添加时间"></el-table-column>
					<el-table-column type="selection" :selectable="selectableFunc" width="44"
						v-if="islist"></el-table-column>
					<el-table-column width="80" label="单选" v-if="!islist">
						<template #default="scope">
							<el-button size="mini" v-if="scope.row.noChoose"
								@click="SingleFunc(scope.row)">选择</el-button>
							<el-button size="mini" v-else disabled>已选</el-button>
						</template>
					</el-table-column>
				</el-table>
			</div>

			<!--分页-->
			<div class="pagination">
				<el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" background
					:current-page="curPage" :page-sizes="[2, 10, 20, 50, 100]" :page-size="pageSize"
					layout="total, prev, pager, next, jumper" :total="totalDataNumber"></el-pagination>
			</div>
		</div>
		<template #footer>
			<div class="dialog-footer">
				<el-button size="small" @click="dialogVisible=false">取 消</el-button>
				<el-button size="small" type="primary" @click="addClerk">确 定</el-button>
			</div>
		</template>
	</el-dialog>
</template>

<script>
	import DataApi from '@/api/data.js';
	export default {
		data() {
			return {
				/*是否加载完成*/
				loading: true,
				/*当前是第几页*/
				curPage: 1,
				/*一页多少条*/
				pageSize: 10,
				/*一共多少条数据*/
				totalDataNumber: 0,
				formInline: {
					category_id: 0
				},
				//练习分类列表
				cateList: [],
				//练习列表
				lecturerList: [],
				//类别列表
				status: [{
						id: 10,
						name: '上架'
					},
					{
						id: 20,
						name: '下架'
					}
				],
				multipleSelection: [],
				/*左边长度*/
				formLabelWidth: '120px',
				/*是否显示*/
				dialogVisible: false,
				/*结果类别*/
				type: 'error',
				/*传出去的参数*/
				params: null
			};
		},
		props: ['isTrain', 'excludeIds', 'islist'],
		watch: {
			isTrain: function(n, o) {
				if (n != o) {
					if (n) {
						this.dialogVisible = n;
						this.type = 'error';
						this.params = null;
						this.getData();
					}
				}
			}
		},
		created() {

		},
		methods: {

			/*是否可以勾选*/
			selectableFunc(e) {
				if (typeof e.noChoose !== 'boolean') {
					return true;
				}
				return e.noChoose;
			},

			/*选择第几页*/
			handleCurrentChange(val) {
				this.curPage = val;
				this.getData();
			},

			/*每页多少条*/
			handleSizeChange(val) {
				this.curPage = 1;
				this.pageSize = val;
				this.getData();
			},

			/*获取练习列表*/
			getData() {
				let self = this;
				let params = self.formInline;
				params.paper_type = 1;
				params.page = self.curPage;
				params.list_rows = self.pageSize;
				DataApi.paperList(params, true)
					.then(res => {
						if (res.code == 1) {
							self.loading = false;
							self.cateList = res.data.category;
							/*判断是否需要去重*/
							if (self.excludeIds && typeof(self.excludeIds) != 'undefined' && self.excludeIds.length >
								0) {
								res.data.list.data.forEach(item => {
									if (self.excludeIds.indexOf(item.paper_id) > -1) {
										item.noChoose = false;
									} else {
										item.noChoose = true;
									}
								});
							} else {
								if (!self.islist) {
									res.data.list.data.forEach(item => {
										item.noChoose = true;
									});
								}
							}
							self.lecturerList = res.data.list.data;
							self.totalDataNumber = res.data.list.total;
						}
					})
					.catch(error => {});
			},

			/*单选*/
			SingleFunc(row) {
				this.multipleSelection = [row];
				this.addClerk();
			},

			//点击确定
			addClerk() {
				let self = this;
				let params = null;
				let type = 'success';
				if (self.multipleSelection.length < 1) {
					ElMessage({
						message: '请至少选择一个练习！',
						type: 'error'
					});
					return;
				}
				if (self.islist && typeof(self.islist) != 'undefined') {
					self.multipleSelection.forEach(item => {
						item.image = item.image.file_path;
					});
					params = self.multipleSelection;
				} else {
					params = self.multipleSelection[0];
					params.image = params.image.file_path;
				}
				self.params = params;
				self.type = 'success';
				self.dialogVisible = false;
			},

			/*关闭弹窗*/
			dialogFormVisible() {
				this.$emit('closeDialog', {
					type: this.type,
					openDialog: false,
					params: this.params
				});
			},

			/*监听复选按钮选中事件*/
			tableCurrentChange(val) {
				this.multipleSelection = val;
			}
		}
	};
</script>

<style>
	.no-list .el-checkbox {
		display: none;
	}
</style>